Time-temperature-transformation diagrams for borosilicate glasses and preparation of chemically durable porous glasses

Kunihiko Nakashima, Kenji Noda, Katsumi Mori

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

To clarify the effects of glass composition and heat-treatment conditions on phase separation and crystallization, time-temperature-transformation (TTT) diagrams for the system (65 - x)SiO 2·25B 2O 3·(10 - y)Na 2O·yCaO·xZrO 2, which is used for fabricating alkali-durable porous glasses, were determined. The microstructures and properties, such as resistance to alkaline attack as a function of ZrO 2 content, of the porous glasses fabricated on the basis of the developed TTT diagrams were examined. CaO and ZrO 2 additions were shown to affect the locations of the noses in the TTT curves for phase separation and crystallization. The substituting of CaO for Na 2O was effective for retaining ZrO 2 in the skeleton of the porous glasses. The alkali resistance of ZrO 2-containing porous glasses was 8-10 times superior to that of the porous glass without ZrO 2. The results demonstrate that TTT diagrams can be used as guides for heat-treatment scheduling in processing or predicting of glass-forming ability and the onset of phase separation and crystallization in glass-forming systems.

Original languageEnglish
Pages (from-to)1101-1110
Number of pages10
JournalJournal of the American Ceramic Society
Volume80
Issue number5
Publication statusPublished - May 1 1997

Fingerprint

Borosilicate glass
glass
diagram
Glass
Crystallization
temperature
Phase separation
Temperature
crystallization
Alkalies
Heat treatment
skeleton
microstructure
Scheduling
Microstructure
Processing
Chemical analysis

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Geology
  • Geochemistry and Petrology
  • Materials Chemistry

Cite this

Time-temperature-transformation diagrams for borosilicate glasses and preparation of chemically durable porous glasses. / Nakashima, Kunihiko; Noda, Kenji; Mori, Katsumi.

In: Journal of the American Ceramic Society, Vol. 80, No. 5, 01.05.1997, p. 1101-1110.

Research output: Contribution to journalArticle

@article{d6e926ad05d44ecc9a0b51db876574fb,
title = "Time-temperature-transformation diagrams for borosilicate glasses and preparation of chemically durable porous glasses",
abstract = "To clarify the effects of glass composition and heat-treatment conditions on phase separation and crystallization, time-temperature-transformation (TTT) diagrams for the system (65 - x)SiO 2·25B 2O 3·(10 - y)Na 2O·yCaO·xZrO 2, which is used for fabricating alkali-durable porous glasses, were determined. The microstructures and properties, such as resistance to alkaline attack as a function of ZrO 2 content, of the porous glasses fabricated on the basis of the developed TTT diagrams were examined. CaO and ZrO 2 additions were shown to affect the locations of the noses in the TTT curves for phase separation and crystallization. The substituting of CaO for Na 2O was effective for retaining ZrO 2 in the skeleton of the porous glasses. The alkali resistance of ZrO 2-containing porous glasses was 8-10 times superior to that of the porous glass without ZrO 2. The results demonstrate that TTT diagrams can be used as guides for heat-treatment scheduling in processing or predicting of glass-forming ability and the onset of phase separation and crystallization in glass-forming systems.",
author = "Kunihiko Nakashima and Kenji Noda and Katsumi Mori",
year = "1997",
month = "5",
day = "1",
language = "English",
volume = "80",
pages = "1101--1110",
journal = "Journal of the American Ceramic Society",
issn = "0002-7820",
publisher = "Wiley-Blackwell",
number = "5",

}

TY - JOUR

T1 - Time-temperature-transformation diagrams for borosilicate glasses and preparation of chemically durable porous glasses

AU - Nakashima, Kunihiko

AU - Noda, Kenji

AU - Mori, Katsumi

PY - 1997/5/1

Y1 - 1997/5/1

N2 - To clarify the effects of glass composition and heat-treatment conditions on phase separation and crystallization, time-temperature-transformation (TTT) diagrams for the system (65 - x)SiO 2·25B 2O 3·(10 - y)Na 2O·yCaO·xZrO 2, which is used for fabricating alkali-durable porous glasses, were determined. The microstructures and properties, such as resistance to alkaline attack as a function of ZrO 2 content, of the porous glasses fabricated on the basis of the developed TTT diagrams were examined. CaO and ZrO 2 additions were shown to affect the locations of the noses in the TTT curves for phase separation and crystallization. The substituting of CaO for Na 2O was effective for retaining ZrO 2 in the skeleton of the porous glasses. The alkali resistance of ZrO 2-containing porous glasses was 8-10 times superior to that of the porous glass without ZrO 2. The results demonstrate that TTT diagrams can be used as guides for heat-treatment scheduling in processing or predicting of glass-forming ability and the onset of phase separation and crystallization in glass-forming systems.

AB - To clarify the effects of glass composition and heat-treatment conditions on phase separation and crystallization, time-temperature-transformation (TTT) diagrams for the system (65 - x)SiO 2·25B 2O 3·(10 - y)Na 2O·yCaO·xZrO 2, which is used for fabricating alkali-durable porous glasses, were determined. The microstructures and properties, such as resistance to alkaline attack as a function of ZrO 2 content, of the porous glasses fabricated on the basis of the developed TTT diagrams were examined. CaO and ZrO 2 additions were shown to affect the locations of the noses in the TTT curves for phase separation and crystallization. The substituting of CaO for Na 2O was effective for retaining ZrO 2 in the skeleton of the porous glasses. The alkali resistance of ZrO 2-containing porous glasses was 8-10 times superior to that of the porous glass without ZrO 2. The results demonstrate that TTT diagrams can be used as guides for heat-treatment scheduling in processing or predicting of glass-forming ability and the onset of phase separation and crystallization in glass-forming systems.

UR - http://www.scopus.com/inward/record.url?scp=0031147164&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0031147164&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0031147164

VL - 80

SP - 1101

EP - 1110

JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

SN - 0002-7820

IS - 5

ER -